对象存储的访问方式，对象存储（COS）公有读对象访问链接格式详解

对象存储（COS）提供了多种访问方式，其中一种常用的方式是通过公有读对象访问链接，这种链接格式允许外部用户通过URL直接访问存储在COS中的对象，公有读对象的访问链接通常包括以下组成部分：，1. 基础URL：以https://cos.cn-east-1.myqcloud.com开头，表示请求的是公有读权限的对象。，2. 域名：例如cn-east-1，表示对象所在的区域。，3. 账户名称：myqcloud，表示创建该对象的腾讯云账户名称。，4. 对象路径：例如example.jpg，表示要访问的对象文件名。，5. 签名：为了确保数据的安全性和完整性，通常会使用签名机制来验证请求的有效性。，通过这种方式，用户可以轻松地共享和访问存储在COS中的对象，而无需担心权限问题，COS还提供了其他高级功能，如跨地域复制、生命周期管理、自动备份等，以满足不同场景下的需求。

对象存储服务（Object Storage Service, OSS）是由腾讯云提供的海量、安全、低成本的对象持久化存储服务，能够满足各种场景下的数据存储需求，在OSS中，可以通过设置对象的权限来允许其他用户公开访问这些对象，从而实现数据的共享和分发。

图片来源于网络，如有侵权联系删除

对象存储中的每个对象都有一个唯一的标识符——对象键（Key），用于定位该对象，通过特定的URL格式，可以实现对公有读对象的直接访问，这种访问方式简单便捷，适用于需要向公众分享文件或数据进行展示的场景。

访问链接格式解析

基本结构

对象存储的公有读对象访问链接通常由以下几个部分组成：

图片来源于网络，如有侵权联系删除

• 协议：通常是HTTP或HTTPS，表示请求使用的传输层协议。
• 域名： oss-cn-hangzhou.aliyuncs.com （示例）
• bucket名称： 例如example-bucket
• 对象键：例如index.html
• 查询参数：可选的额外信息，如过期时间等。

完整的URL格式如下：

https://oss-cn-hangzhou.aliyuncs.com/example-bucket/index.html?Expires=1609459200&Signature=lX%2F%2BZw%2BQ4%2B%2F%2BxY%2FtJ7%2F3%2F%2Fp%2F%2B%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%